Fracture Toughness Predictions Using the Weibull Stress Model with Implications for Estimations of the T0 Reference Temperature
This work presents a numerical and experimental investigation into the applicability of precracked Charpy specimens to determine the T0 reference temperature for pressure vessel steels.A central objective is evaluate the effectiveness of the Weibull stress model to correct effects of constraint loss in PCVN specimens which serves to determine the indexing temperature T0 based on the Master Curve methodology.Fracture toughness testing conducted on an A285 Grade C pressure vessel steel provides the cleavage fracture toughness data needed to estimate T0.For the tested material,the Weibull stress methodology yields estimates for the reference temperature from small fracture specimens which are in good agreement with the corresponding estimates derived from testing of much larger crack configurations.
Cleavage Fracture Constraint Effects Weibull Stress Master Curve PCVN Specimen
Claudio Ruggieri Rafael G.Savioli Robert H.Dodds Jr.
Department of Naval Architecture and Ocean Engineering,University of S(a)o Paulo,05508-030,Brazil Dept.Of Civil Engineering,University of Illinois at Urbana-Champaign,Urbana,IL 61801,USA
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）